of chicago



March 8, 1932. u H. L JoRGENsl-:N 1,848,726A

TOGGLE FOR HIDE STRETCHERS Filed April 12, 1929 tures and elements of construction, herein closed or gripping position.V

Patented Mar. 8, 1932 *UNT-EDSTATES LPATENMFIC l FORATING'COMPAN Y, OFV'CHICAGO, ILLINOIS, A CORPORATION OF ILLINQIS-v v'roserLE Foa iiiDEsTiiETciiEas Appiiqatioil flied April i2',

tAn object of the invention isfto produce a toggle of durable and simplified construction that permits of convenient 'manipulation by one hand when being applied or removed. Another object is to provide a toggle with an improved form of gripping jaw Jfor firmly securing the hide or -skin in stretched poshown and described, `as indicated by 'the claims. l

In the drawings Figure 1 is aside elevation of the toggle embodying this invention, shown in open position. i

Figure 2 is la front view looking toward the jaws, as indicated at line 2'-2 on` Figurel.

Figure 3 is 'a longitudinal'section` taken centrally through thetoggle, as indicated at line 3-3on Figure 8s; showing the'toggle in the closed or gripping position. s Y l Figure 4 isa fragmentary sectional view throughthe lower jaw;

' Figure'is a perspective View of the lbaseV or frame member.V l s n I Figure 6 is a perspective view of the upper Jawumemr s. Figure 7 "is a perspectiveview of the operating lever; and I Figure 8 'is a rearend View of theftoggle The toggle embodying thy presentinvention includes 1a baseer frame member, 10,

' herein shown asa metal'` stamping formed with laterally spaced upwardly extending sides`,`11,ktlie upper ends of which are bent inwardly in a horizontal planeto formshelves orl-iianges, 12. Pivotally connected to they rear end of thesides, y11,7by means of a pin, 13, is 4an upper jaw, 1 4, also formed as a metal stamping, composed-lof two' vertical side portions, 15, disposed outside ofthe frame sides, 11, andconnected at `,the forwardV end by a ltransversely extending portion, 16, which :serves as the upper jaw proper. Pivotally connected to said upper jaw member, v14, just l1929. vserial naesesad i Y rearwardlylof the transverse portion, 16, on a transverse pivot, 17 carried by the sides 15, is an operating lever,18, formed with spaced side Walls, 19, dimensioned to it betweenthe upright walls, 11,015 the base, as may be seen in Figures 3 and 8. At their forward ends base. The outer end of the operatingV lever is shaped to provide a convenient linger' grip rin theiforml of a substantially closedfloop or eye,v24:.

AA lower cooperatingjaw member, 25,`jis positioned between e upright sides v11, and is pivot'ally connected atits orwa'rdgend tothe forward rend of the base or frame, 10, in any suitable manner, and as herein shown, by means of trunnions,26, engaged in theapertures, 27, in'theside walls, 11, of said ybase zmember. This lower jawmember, 25, when free, extends inV anfupwardly inclined rear-V ward direction with its narrowed rear portion disposed between theV rounded ends, 19a, of the operating lever side members, `19, and urged toward the transverse pivot, 17,'by

means of a coil spring, 28, which is interposed between the under side of said j aw umember and the base, 1 0.V It will be understood that -this spring is maintained in position by any Ysuitable means such! as depressions for nodes, struckjout of the respective contact-ing surfaces (not shown). The lower 'jawmemben 25, is` formed with an aperture, *30,1 through which extends the stud portion,'31,'of a removable material-gripping member, 32.

` YHANS i.. JoRsENsEN, or CHICAGO, ILLINOIS, Assisivon r.ro HARBINGTON@ KING'PER- Said member,l 32, is preferably'oi:I circular or l i button form and hasin its 'uppersurface a plurality of concentric, conicallylformedcorrugations, 33,.'vwhich co-act with'the" transs verse portion, 16, of the upper :'jaw memberv ,Y

for pressing the hideor skin into the corrugations, as indicated in dotted klines at A, thusv insuring a firm grip `for holding it in stretched position. The stem portion, y31, of the removable member is formedwith a peripheral groove, 34, in which the member tends to shift forward due to the inclination of the jaw, 25, so that the head, 35, may engage the under side of the lower j aw member, 25, as may be seen in Figure 4, and hold said button member, 32, against upward removal.

Toggle devices of this general type are ordinarily used in connection with reticulated framesy asyinadicated at B1, which may be of wire mesh, perforated plate, etc., and the device is conveniently secured to the frame, B,

at. 'ain-y' desiredfopening .by means of a hook, or spur,.36=, termed`integrally4 from thefrear edge of the base or frame member, 10, and tapered forwardly and downwalrdlyina concavo-convex formation. This formation produces a spur of unusual strength adapted-to resist the pulling `stresses of the hide when stretched, which would tend to. shear the hook from its base.

Upon swinging the operating lever, 18, in aY downward direction with respect to .the position ,shownl in` Figure 1, the roller, 23, acts cam-wise against the under side of the ange or shelf' members, '12, of the base member, forcing the upper jaw member, 14, in a downward direction about the pivotpin, Y13, and during a portion of the range of downward movement of' said upper jaw, the pivot pin, 17, engages the tail or rear end yportion of the loi-wer jaw, 2.5., causing it lto rock rearwardly, about its trunnions, 26, against the reaction of the spring 28,` so that the jaws are causedto approach a co-operative grip- ,pingposition,` and further movement of the upper jaw (when a 'hide or skin is interposed between said jaws) will transmit pressure through the thicknessof said interposed hide or skin tothe button, 32, ofthe flowerjaw, forcing-said lower jaw still 'further in a downward-direction. Due to the respective proportions ofthe lever arms of the lower jawthat is,I the relation of the trunnion pivots,

:26, tothe gripping button and to the tail end,

` position the line of direction of the pressure between the roller, 23, andthe flanges, 12,

will 'fall-between the pivots, 13v1 and 17, producing an eccentric locking effect, while the v pivot pin, 13, will serveV as a stop'to arrest thelever -movement at this flocked position.

It willlbe manifest that ,the devicemay'be conveniently held in onehand andthe operatsoon as the hide or like material is gripped, a horizontal pull may be exerted through the eye of the lever without releasing the grip.

As may be seen in Figure 3, when the jaw portion, 16, and the corrugated button, 32, are in co-operative gripping position, the jaw,

4225, is so disposed thatthe button member 1s inclined forwardly, in which posit-ion only the rear portion of the corrugated surface cooperates wi-th the jaw portion, 16 in which position-'said rear portion of the button, 32, is disposed substantially parallel to said upper jaw. Thus if certain portions of the Corrugations become worn in use, the button may Abe turned slightly to employ a different .part ofthe corrugated area, or when vneces- .the gripping areas of the jaws into `more nearly parallel relation independently ofany gripping pressure between them.

.2. In a toggle the combination of albasemember .and cooperating jaw members pivotally supported upon said base member 4at separate axes, an operating lever and a fulcrum pin by which it is secured to, one of the jaw members, means rigidly associated with the base against which said leverV reacts for swinging saidA jaw member toward gripping position, the other jaw member having a part extending adjacent said-fulcrum pin, whereby pressure is transmitted from one jaw member Atoi-.the other :for swinging them simultaneously about their respective pivots toward gripping position.

3, Inthe combination delined in claim 2, a spring positioned to react between the base and said other jaw member yieldingly opposing said movement toward gripping position and thus tending to return the parts to open position.

l. In a toggle, thecombination of a base member, cooperating jaws pivotally supported by said base member and movable about separate axes, and means for forcing the jaws into gripping position,-one of said jaws having a removable member provided with a roughened surface, said removable member being of button form, having a plurality of concentric corrugations.

5. In a toggle,`the combination of a base member, cooperating jaws pivotally supported by said base member and movable about separate axes, and means for forcing the jaws into gripping position, one of said jaws having a removable member provided face of said removable member including a plurality of concentric corrugations arranged 1n conical relations.` f

6. In a toggle, the combination of a base l member provided with upright sides, one of which is formed with anl inwardly project-v member, cooperating ljaws pivotallly supported by said base member and movable about separateaxes, and means yfor forcing the jaws into gripping position, onel of saidV jaws having a removable member provided with a roughened surface, said .removable member having a stem provided with a circumferential groove, and said jaw having an aperture therein of sufficient size to permit insertion of the stem, whereupon the stemV may bev shifted to cause a portion of the wall surrounding the aperture to enter the groove.

7. In a toggle the combination of a base member provided with cooperating j aws,'one of said jaws being pivotally mounted on the base member, anoperating lever pivotally connected to said pivotal jaw intermediate its gripping portion and its pivotal mounting' and arranged for co-action with the base member, whereby swinging the lever about its pivot moves said pivotal jaw toward and from the other jaw.

8. In a toggle, the combination ofa base member provided with upright sides and a horizontally extending shelf portion supported in spaced relation to the base, cooperating jaws carried by said base member, one of said jaws being pivotally mounte'd on said base member, and an operating lever pivoted to said pivotal jaw intermediate its with the underside of the flange, whereby the movement of thelever in a downward direction causes said jaws to swing about their pivots to gripping position.

11. In a toggle, the combination of a base side of the other jaw, said lever having an` arm provided with a roller adapted to co-act with the flange, whereby the swinging yof said lever about its pivot urges both of the jaws in a downward direction, against the reaction of the spring, into gripping position.

A 12. In the combination defined in claim 11, the outer end of said operating lever being formed with a finger' grip in the form of a substantially closed loop or eye. i

13. In a toggle comprising a base and two a cooperating jaws both pivoted thereon,a

. single springrnormally urging the jaws toward open position and an operating lever pivotally connected to one jaw, arrangedvto' vforce said-jaw: toward the other, said jaws being mounted for further movement in opposition to the spring to bring the lever to an eccentrically vlocked position.

Y VHANS L. JORGENSEN.

gripping portion andits pivotal mounting l and having an arm reacting against said shelf portion of the base member, for moving said pivotal jaw toward the other jaw.

9. In a toggle, the combination of a base member, formed with upright'sides, one of which is provided with a laterally extending flange, cooperating jaws carried by the base member, one of said jaws being pivotally mounted on the base, van operating lever pivotally connected to the pivotal jaw and having an outwardly extending arm, and a roller journaled at the end of said arm, co-

, acting with said flange for moving the pivotal jaw toward the other jaw in gripping positiomsaid roller normally being disposed forwardly of the axis of the lever whenthe jaws are separated, and adaptedl to be moved forcibly in the opposite direction beyond said axis for holding said jaws in gripplng position.

and engageable with the other jaw, said lever' having an outwardly extendingarm, a roller journaled on the end' of the arm, co-acting 10. In a toggle, the combination ofa base l member provided with upright sides, one of Y Vwhich isformed with an inwardly extending flange, cooperating jaws pivotally mounted 125 Y 

